Isn't that another possibility?
Of course there may be, but we can all get lost in the endless ‘possibilities’ of life (and death). To ponder them is fine, but if you want these ideals taken seriously, go out there and try to prove them. Otherwise I’ll personally always listen more favourably to those who can back up current facts, than those who say ‘oh but you didn’t see/hear what I did, I know it’s true in my heart’. The latter means nothing to me, it’s not a lack of open mind that dismisses their experience, it’s the fact it can some or all of it can usually be explained in a scientific way.
In the hundreds of years humanity has been setting out to ‘prove things’, the changes in technology and society - how many times has it transpired that it was something paranormal, magical, done by a deity, etc?